The Acer Mac Mini M4 Dock ODK5R0 is an all-in-one aluminum stand and hub designed for the Apple Mac mini M4. It expands connectivity with front and rear ports, adds high-resolution HDMI display support, and features an internal M.2 NVMe/SATA SSD enclosure for up to 8TB of extra storage. Key Features & Specifications-Design: Form-fitting stand that sits underneath the Mac mini M4. Storage Expansion: Built-in M.2 NVMe/SATA SSD slot supporting up to 8TB.Display Support: HDMI port supporting up to 4K at high refresh rates (up to 4K@144Hz). Data Ports: Multiple USB-A and USB-C ports with speeds up to 10Gbps. Card Reader: Simultaneous SD and TF (microSD) card slots.Audio: Integrated 3.5mm audio jack. New / Open box. Thanks for looking!